PSLE Tim, Valen and Lee had 378 stickers altogether. Tim gave
320 of his stickers to Valen and
25 of his stickers to Lee. After that, all three boys had the same number of stickers. What was the difference in the number of stickers between Valen and Lee at first?
|
Tim |
Valen |
Lee |
Total |
Before |
20 u |
6 u |
1 u |
27 u |
Change 1 |
- 3 u |
+ 3 u |
|
|
Change 2 |
- 8 u |
|
+ 8 u |
|
After |
9 u |
9 u |
9 u |
27 u |
Comparing between Tim, Valen and Lee in the end |
1x9 = 9 u |
1x9 = 9 u |
1x9 = 9 u |
3x9 = 27 u |
Fraction of stickers that Tim had left
= 1 -
320 -
25 = 1 -
320 -
820 =
920 Total number of stickers
= 3 x 9 u
= 27 u
27 u = 378
1 u = 378 ÷ 27 = 14
Difference in the number of stickers between Valen and Lee at first
= 6 u - 1 u
= 5 u
= 5 x 14
= 70
Answer(s): 70